<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">
    <p>{{ fullName }}</p>
  </div>
  <script src="lib/vue.js"></script>
  <script>
    var vm = new Vue({
      el: '#app',
      data: {
        firstName: '张',
        lastName: '三'
      },
      computed: {
        // 默认书写方式：
        /* fullName () {
          return this.firstName + this.lastName;
        } */

        // 分开书写 getter 与 setter
        fullName: {
          get () {
            return this.firstName + this.lastName;
          },
          set (newValue) {
            var nameArr = newValue.split(' ');
            this.firstName = nameArr[0];
            this.lastName = nameArr[1];
          }
        }
      }
    });
  </script>
</body>
</html>